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| User defined location sharing scheme based on blockchain |
Zihao SHEN1( ),Mengke LIU1,Hui WANG2,*(),Peiqian LIU2,Kun LIU2 |
1. School of Computer Science and Technology, Henan Polytechnic University, Jiaozuo 454000, China
2. School of Software, Henan Polytechnic University, Jiaozuo 454000, China |
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Abstract Aiming to address the problem of privacy leakage faced by users of mobile social networks when using location-sharing services, a blockchain-based user-defined location-sharing (BUDLS) scheme was proposed. Firstly, the distributed management of location information was realized based on blockchain to prevent the central server from collecting a large amount of user privacy and to enhance the controllability of user location information. Secondly, an encryption mechanism based on the combination of public key digital signature and homomorphic encryption was designed, effectively preventing the location information from being illegally obtained by attackers. Finally, flexible access control policies were defined according to the actual needs of users to provide users with reliable location-sharing services. The security analysis verified that the BUDLS scheme met the privacy security goal. Simulation results showed that, compared with the traditional scheme, the BUDLS scheme reduced the time cost, improved the accuracy of location queries, and effectively protected the location privacy of users on mobile social network platforms.
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Received: 14 July 2023
Published: 27 March 2024
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| Fund: 国家自然科学基金资助项目（61300216）；河南省高等学校重点科研项目（23A520033）；河南理工大学博士基金资助项目（B2022-16，B2020-32）. |
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Corresponding Authors:
Hui WANG
E-mail: szh@hpu.edu.cn;wanghui_jsj@hpu.edu.cn
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基于区块链的用户自定义位置共享方案
针对移动社交网络位置共享服务存在的隐私泄漏问题，提出基于区块链的用户自定义位置共享（BUDLS）方案. 基于区块链实现位置信息分布式管理，防止中央服务器收集大量用户隐私，增强用户位置信息的可控性. 设计基于公钥数字签名和同态加密相结合的加密机制，防止位置信息被攻击者非法获取. 定义灵活的访问控制策略，根据用户需要提供可靠的服务. 安全分析验证结果显示，BUDLS方案满足隐私安全目标. 仿真实验结果表明，相比传统方案，BUDLS方案降低了时间成本，提高了位置查询的准确性，有效保护了移动社交网络平台用户的位置隐私.
关键词：
移动社交网络,
区块链,
位置共享,
位置隐私,
同态加密
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